Polycarbonate cross-linker resin and fire resistant compositions made therefrom

(19)

(11)

EP 0 372 299 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	05.02.1992 Bulletin 1992/06

(43)	Date of publication A2:
	13.06.1990 Bulletin 1990/24

(21)	Application number: 89121627.7

(22)	Date of filing: 23.11.1989

(51)	International Patent Classification (IPC)⁵: C08G 64/14, C08L 69/00, C08L 77/00 // (C08L69/00, 69:00),(C08L77/00, 69:00)

(84)	Designated Contracting States:
	DE FR GB IT NL

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Priority:

07.12.1988 US 280845

(71)	Applicant: GENERAL ELECTRIC COMPANY
	Schenectady New York 12305 (US)

(72)	Inventor:
	Rosenquist, Niles Richard Evansville Indiana 47712 (US)

(74)	Representative: Pratt, Richard Wilson
	London Patent Operation G.E. Technical Services Co. Inc. Essex House 12/13 Essex Street London WC2R 3AA London WC2R 3AA (GB)

(56)

References cited: :

(54)	Polycarbonate cross-linker resin and fire resistant compositions made therefrom

(57) A polycarbonate resin, containing the polymer chain at least one divalent moiety of the formula:-

wherein E is selected from the group consisting of alkylene containing from 1 to 15 carbon atoms, inclusive, and halogen-substituted alkylene containing from 1 to 15 carbon atoms, inclusive, a is an integer of 0 or 1 and R′ is hydrogen or hydrocarbyl or halogen substituted hydrocarbyl amenable to beta elimination upon thermal degradation.

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